Mold



L. D. OLIVER July 1, 1930.

' MOLD Filed March 26, 1927 I Patented'July lplggg LOTT DA E omvnn, or HousroN," TEXAS MOLD.

I Application filed March 26, 1927 serial nelnassa.

This invention relatesto new im rovements in a mold.

ne object of the-invention is to provide a mold for forming building units, such as brick, and is of such construction that a plurality of such units may be simultaneously f molded with a weakened line between 'them along which themolded unit may lie-easily separated so as to provide each unit with a roughened facethat may be exposed in erects --ing the units into a structure, in order to, give the erected structure a novel and more ornamental appearance. v,

Another obj ect. of the inventionis to provide a moldof the character described whereby provision is madefor incorporating into the plastic material from whichthe units are 'molded andv adjacent the. weakened. linethereof, a difierentmaterial which will co- 2 alesce with said plastic material but which,

when the units are broken apart, will accentuate the roughness of thebroken surface and by means of whichqthe broken surfaces of different units may be varied.

With the above and other objects in view this invention has particular relation to certain novel features of construction, arrangementof parts. and use, an example of which is given in this specification and illustrated.

in the accompanying drawings, wherein with the cover removed. Flgure 2 shows across sectional the complete mold.

Figure 1 shows a plan view of the mold,

view of for incorporatingiinto the plastic material, adjacent the proposed weakened line of the molded unit, a different forni of a material j the main body. of the 1 this supplemental mold may be inserted in the box l with one of said boards let on l each sideof the ribs 7, and 8. The plastic from that of which unit is composed.

Figure 4 shows a faceviewof the molded building unit. p g p i V Figure 5 shows a sideelevation thereof, and i vmay be produced. e 7,

Referring now more particularly to the i 'i drawings, wherein like numerals of reference and useful Figure 3 shows a cross sectional View, thereof, showing means associated therewith Figure 6 shows a lengthwise sectionalview of a modified form of buildingunit,which designate similar parts in each of the figures,"

' the numeral .1 designates the mold box, as a whole, which has the sides 2, 2, the ends 3, 3,

and the bottom l. 'YThere is a top 5, for the mold box whichis of a size to fit within the box land which has an'upstandin'g grip .6. Extending across the bottom 3, preferably midway between and parallel with the sides 2,"there is an upstanding. bottom rib? which is entended up the end walls 3,3, forming the I end; ribs 8, 8, and the top 5 has a lengthwise depending'rib 9 which aligns with theribs 7 and 8,.when the top is fitted within'the box. In use the required amount of concretious, or other plastic material from which the building units are formedfis poured into the "moldboxandthe cover Sis-then placedithere 1n and pressed downwardly to force said material into'allfparts of the mold and 'tjo coin- .lpact theisame and the material'is then at lowed to set when it has suliicientlyfhar fdened the molded block maybe removed from'the mold and will have a surrounding ggroove, as 10, formed by the ribs 7 8 aide,

which will so weaken the block that it may Y beleasilj broken" into a plurality of brick, or btnldingunlts, asll, ea'ch'havinga roughened face, as 12, surrounded by a smooth marginal bevel, as 13, which will present a novel and ornamental surface when the units are erected into a structure with'the roughened faces exposed. 1

In order to vary, or accentuate, the rough ness of these broken faces, as is sometimes desired.,-the material adjacent the broken line niaylbevaried: In order to accomplish this a supplemental mold has been provided come prisingthe spaced mold .boards 14, 14,Which are fixed intheir relation to each other and have their upstanding handle 15. In use filled With,coarse' aggregate, glass particles, f

or otherjs'elected material, and the supplethefultimate brickto be produced with said bodies .jspaced ,apart', then m0lding into the mental mold then withdrawn to-allow all'of the platsic material in the mold box 1 to coalesce into a unitary mass, and the cover -5 is then applied as, and with the results hereinabove explained.

What I claim is: V 1.- The combination with a moldhox hav-' ing 'projectingmeans acrossfthe -bottom' and i e the adjacent walls of the box, offspac'ed removable partitions disposed one'oneac'h side of said means. i H

2. The combination with a mold box having an inside rib across its bottom which is extended across the adjacent walls of the box, v

of spaced partitions arranged on'e on each side of said rib, said partitions being removable. i I v i 3. Theprocess of forming brick'from a molded unit of plastic'material which consists' inmolding said plastic material in a mold box into separate bodiesof the form of the ultimate brick to be produced with said bodies 'spaced japart, and molding into the space between said bodies adifferent plastic material, andpermitting the material of said bodies, and the difierent material between them to coalesce, while said materials are plastic.

4. .The process of forming brick from a molded unit of plastic material which consists in molding said plastic 'material. in a mold box into separate bodies of the form of space between said bodies a different plastic material, then permitting the material of said bodies, and the different material between them to coalesce, while said materials are plastic, forming weakened lines of cleavage defining the said ultimate brick, permitting said material to set and then separating the brick along said weakened lines. 7 i

have signed my In testimony whereof I name to this specification.

LOTT DAVE OLIVER. 

